About 300 days optical quasi-periodic oscillations in the long-term light curves of the blazar PKS 2155-304

Qi Zheng, Xueguang Zhang, Qirong Yuan

Based on the long-term light curves collected from the Catalina Sky Survey (CSS) (from 2005 to 2013) and the All-Sky Automated Survey for Supernovae (ASAS-SN) (from 2014 to 2018),…